[wp-trac] [WordPress Trac] #33229: Customizer: remove the no more used "control-panel-back"

[WordPress Trac]

#33229: Customizer: remove the no more used "control-panel-back"
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 Reporter:  afercia       |       Owner:  ocean90
     Type:  defect (bug)  |      Status:  assigned
 Priority:  normal        |   Milestone:  4.3
Component:  Customize     |     Version:  trunk
 Severity:  normal        |  Resolution:
 Keywords:  has-patch     |     Focuses:  ui, accessibility, javascript
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Comment (by ocean90):

 We can remove `.customize-overlay-close` as well. It was a workaround for
 [comment:ticket:28784:44].

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Ticket URL: <https://core.trac.wordpress.org/ticket/33229#comment:4>
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